After a thousand years of trading, start a million barrels of oil

Chapter 216 Reduction of 600 kg of fuel (seeking a monthly ticket)

Zhu Lie is a little strange, what kind of mission will come at this time?
But he still packed up and went to the office according to the time the teacher said.

When I arrived, I found that all the students under the tutor had arrived, and everyone chatted with each other and waited for the tutor to come.

Zhu Lie sat down next to a graduate student with a good relationship, and chatted: "Senior sister, do you have any ideas?"

The senior sister turned her head and said: "I'm still thinking about it, it's okay, there will be one more year next year, the topic selection will be determined in the last semester, and I will work on it slowly later."

"However, I heard from other seniors that our supervisors have strict requirements, including the graduation thesis, so we should prepare early to be prepared." Zhu Lie reminded, and by the way, he saw the chewing gum on her desk, opened the wrapping paper and threw it into his mouth to chew.

"You kid ate my food again." The senior patted his stealing hand, and then answered his question seriously:

"That's why I told you that I started to conceive in advance. They have completed a lot of research and have time to think about it in the next semester. We all prepare according to the earliest time. I am earlier than ordinary people. Hey, I don't know when it will be." What can you come up with?"

Zhu Lie chewed two more bites of gum, and he just asked casually, then changed the subject and said, "Do you know what project the instructor asked us to come to today?"

The senior sister shook her head: "I don't know exactly, I just said it's related to the combustion chamber of the engine. And I asked them, and said that the instructor said that after the completion of this project, basically everyone's graduation project and graduation thesis will be done."

Zhu Lie clearly understands that an aviation engine is mainly composed of four parts: fan, compressor, combustion chamber, and turbine. In the air, the airflow passes through the compressor for multiple extrusions to form compressed gas, enters the combustion chamber, and ejects flames to generate huge kinetic energy to drive the turbine. , the turbine then drives the fan placed at the front to rotate through the outer duct to generate thrust.

According to this process, it goes back and forth, simply speaking, it is basically this principle.

Among them, the combustion chamber is an important part, and its design is also quite difficult.

But Zhu Lie didn’t know what the tutor meant when he said that the project would be solved after the basic graduate project and the thesis defense. He knew the tutor’s request, and he had to make something with a considerable degree of innovation to pass the test from him. .

Besides, even if there are some new things in this project, with so many graduate students under the teacher, the graduation project and thesis are not allowed to be repeated. How can a project contain such a large amount of innovation?
Juliet didn't quite understand.

While he was pondering, the instructor happened to come in, so he stopped thinking about it, let's see what the project is.

After the instructor came in, he greeted everyone, then turned on the computer, connected it to the projector, and played the PPT.

Zhu Lie saw that the title read: "The principle and application of improving the heat utilization efficiency of the combustion chamber to 80% by using the film spray film suction technology." '

Zhu Lie swallowed. Of course he knew what the title meant. When an airplane flies, it relies on the combustion chamber to ignite air and fuel to generate power.

And the problem wherein is, the combustion of fuel is usually insufficient in the combustion chamber, and a large part is sprayed out as fuel oil itself, wasted in vain.

Therefore, the combustion efficiency of various types of engines is usually even less than 50%, and generally can reach more than 40%. Even for eagle sauce, it is said that it is less than 60%.

And what the instructor wrote above, using the film spray film suction technology can reach 80%?What is this concept?This is almost twice as high as the original utilization efficiency.

In other words, there is no need to change anything else, just change the combustion chamber, and the total mileage of the aircraft can be doubled.

For civil aviation, this means that the fuel cost is reduced by half, and for the public, it means lower ticket prices.

For military aircraft, it means that a larger mileage can be traveled at one time. It used to be far from flying 20 miles and 7000 kilometers to some countries, but now it can fly there. If it is carrying nuclear weapons, it means a huge deterrent. form.

"Is what the teacher wrote true or false?" Zhu Lie couldn't believe it, and asked the senior sister, "If this is true, the plane will fly around the world without refueling."

The senior was obviously also surprised by the title, she chuckled and said, "Pay attention, the instructor didn't mark it as an aircraft engine, which means it should be a general technology.

Including automobiles, rockets, and missiles, any object that relies on the kinetic energy converted from thermal energy to move objects forward has the possibility of using this technology in theory.

If this technology is true, for example, in the automotive industry, even if there is no ultra-high energy density lithium battery some time ago, just relying on the fuel vehicles of the past, because of the improvement of fuel efficiency, the cruising range can reach 1000 kilometers, which is enough There are existences that subvert people's driving experience.

Moreover, the improvement of use efficiency means that the demand for crude oil is less. At present, it will take a long time for high-energy lithium batteries to be fully applied in all walks of life. It can still play a vital role in reducing our dependence on crude oil. . "

The senior sister glanced at the title of the PPT on the projection screen again, and continued: "There are rockets, not to mention rockets. The biggest paradox of its launch is that if it carries more fuel, the thrust is strong, but it also increases In terms of weight, the final effect may not be as good as the comprehensive effect obtained by using less fuel.

The same is true for missiles. A large part of the deterrent power of missiles depends on how far they can hit. In this way, some original medium-range missiles will immediately transform into long-range missiles. When all these weapons add up, I don’t know at once. How much deterrence should be increased out of thin air. "

When Zhu Lie was told by his senior, his emotions became incoherent. What the senior said was true. He still remembered a story about reducing fuel for missiles many years ago.

In 1964, Qian Xuesen led a team to conduct a test launch of Dongfeng 2 next door to the west. As a result, the missile could not reach the range due to the high temperature.

Such a situation made even the always prudent Mr. Qian a little anxious. When everyone was at a loss, a young man who had just returned from studying in the north spoke up.

In the case of insufficient thrust of the missile itself, he not only added fuel to the plan, but reduced 600 kilograms of fuel.

Everyone thought he was joking, only Qian Lao asked him to continue.

And this young man came to power and convinced everyone through rigorous calculations. The reduction of 600 kg of fuel reduced the thrust, but it also reduced the weight of the missile and reduced the burden. Therefore, the comprehensive calculation can make the range longer.

The result of the fact is indeed as the young man thought, the weight-reduced missile successfully hit the intended target.

And this young man is my country's first chief designer of aerospace engineering: Wang Yongzhi!

It can also be seen that the fuel itself also accounts for a large proportion of weight in many vehicles and aircrafts. Sometimes adding or subtracting a little has to be considered a lot.

But if the combustion efficiency is directly improved without adding fuel, then this problem does not exist at all, and it can solve a large number of such micro-trade-off problems and promote progress in many fields.

So Zhu Lie was shocked when he saw the title, but after the shock, he was more puzzled.

The title sounds good, but can it really be realized?Or is it the same as before, that is, to propose a new concept that is unconventional, and it will take 30 years to realize it, purely for the convenience of publishing papers and reviewing professional titles.

So he was also curious about the contents, and at this moment, the instructor cleared his throat and began to explain formally.

(End of this chapter)